package day01;

import util.JdbcUtil;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;

@WebServlet("/showModify")
public class ShowModifyEmpServlet extends HttpServlet {

    @Override
    protected void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

        request.setCharacterEncoding("utf-8");
        response.setContentType("text/html;charset=utf-8");

        PrintWriter out=response.getWriter();


        Integer id=Integer.parseInt(request.getParameter("id"));


        Connection con=null;
        PreparedStatement ps=null;
        ResultSet rs=null;

        try{
            con=JdbcUtil.getConnection();

            con.setAutoCommit(false);


            String sql=new StringBuffer()
                    .append("select * ")
                    .append("from t_emp ")
                    .append("where id=? ")
                    .toString();

            ps=con.prepareStatement(sql);

            ps.setInt(1,id);

            rs=ps.executeQuery();

            if(rs.next()){
                id=rs.getInt("id");
                String name=rs.getString("name");
                Double salary=rs.getDouble("salary");
                String sex=rs.getString("sex");
                String edu=rs.getString("edu");
                String hobbies=rs.getString("hobbies");
                String description=rs.getString("description");

                out.print("<!DOCTYPE html>");
                out.print("<html lang=\"en\">");
                out.print("    <head>");
                out.print("        <meta charset=\"UTF-8\">");
                out.print("        <title>Title</title>");
                out.print("    </head>");
                out.print("    <body>");
                out.print("        <form action=\"/web/modify\" method=\"post\">");
                out.print("<input type='hidden' name='id' value='"+id+"'/>");
                out.print("            姓名：<input type=\"text\" name=\"name\" value='"+name+"'/><br/>");
                out.print("            工资：<input type=\"password\" name=\"salary\" value='"+salary+"'/><br/>");
                out.print("            性别：<input type=\"radio\" name=\"sex\" value=\"1\" "+("1".equals(sex)?"checked='checked'":"")+"/>男");
                out.print("                 <input type=\"radio\" name=\"sex\" value=\"0\" "+("0".equals(sex)?"checked='checked'":"")+"/>女<br/>");
                out.print("            学历：<select name=\"edu\">");
                out.print("                    <option value=\"0\">---请选择---</option>");
                out.print("                    <option value=\"1\" "+("1".equals(edu)?"selected='selected'":"")+">高中</option>");
                out.print("                    <option value=\"2\" "+("2".equals(edu)?"selected='selected'":"")+">专科</option>");
                out.print("                    <option value=\"3\" "+("3".equals(edu)?"selected='selected'":"")+">本科</option>");
                out.print("                 </select><br/>");
                out.print("            爱好：<input type=\"checkbox\" name=\"hobbies\" value=\"1\" "+getChecked("1",hobbies)+"/>吃");
                out.print("                 <input type=\"checkbox\" name=\"hobbies\" value=\"2\" "+getChecked("2",hobbies)+"/>玩");
                out.print("                 <input type=\"checkbox\" name=\"hobbies\" value=\"3\" "+getChecked("3",hobbies)+"/>睡<br/>");
                out.print("            简介：<textarea rows=\"5\" cols=\"20\" name=\"description\">"+description+"</textarea><br/>");
                out.print("            <input type=\"submit\" value=\"修改\"/>");
                out.print("        </form>");
                out.print("    </body>");
                out.print("</html>");
            }


            con.commit();
        }catch (Exception e){
            e.printStackTrace();
            try {
                con.rollback();
            } catch (SQLException e1) {
                e1.printStackTrace();
            }
        }finally{
            JdbcUtil.close(con,ps,rs);
        }



    }

    private String getChecked(String value,String hobbies){
        if(hobbies!=null){
            String[] s=hobbies.split(",");

            for (String hobby : s) {
                if(hobby.equals(value)){
                    return "checked='checked'";
                }
            }
        }
        return "";
    }
}
